INFO: task syz.3.1434:9649 blocked for more than 422 seconds.
      Not tainted 6.13.0-rc2-syzkaller-g21f1b85c8912 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.1434      state:D stack:0     pid:9649  tgid:9647  ppid:5920   flags:0x0000000c
Call Trace:
[<ffffffff861cbf70>] context_switch kernel/sched/core.c:5369 [inline]
[<ffffffff861cbf70>] __schedule+0xdaa/0x393a kernel/sched/core.c:6756
[<ffffffff861cebc4>] __schedule_loop kernel/sched/core.c:6833 [inline]
[<ffffffff861cebc4>] schedule+0xc4/0x324 kernel/sched/core.c:6848
[<ffffffff861cf50c>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:6905
[<ffffffff861d8780>] rwsem_down_read_slowpath+0x56a/0x91e kernel/locking/rwsem.c:1084
[<ffffffff861d91d2>] __down_read_common kernel/locking/rwsem.c:1248 [inline]
[<ffffffff861d91d2>] __down_read kernel/locking/rwsem.c:1261 [inline]
[<ffffffff861d91d2>] down_read+0xe4/0x45e kernel/locking/rwsem.c:1526
[<ffffffff80143da2>] mmap_read_lock include/linux/mmap_lock.h:144 [inline]
[<ffffffff80143da2>] exit_mm kernel/exit.c:546 [inline]
[<ffffffff80143da2>] do_exit+0x810/0x296e kernel/exit.c:925
[<ffffffff80146460>] do_group_exit+0xd4/0x26c kernel/exit.c:1087
[<ffffffff8017cf9e>] get_signal+0x1f4c/0x22de kernel/signal.c:3017
[<ffffffff8006b8c4>] arch_do_signal_or_restart+0xa3c/0x1d2c arch/riscv/kernel/signal.c:437
[<ffffffff861c30c4>] exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
[<ffffffff861c30c4>] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
[<ffffffff861c30c4>] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
[<ffffffff861c30c4>] syscall_exit_to_user_mode+0x29e/0x316 kernel/entry/common.c:218
[<ffffffff861c1e8a>] do_trap_ecall_u+0x86/0x216 arch/riscv/kernel/traps.c:345
[<ffffffff861e652a>] _new_vmalloc_restore_context_a0+0xc2/0xce